#if 1
#include "stdio.h"

int main(){
	int a,b,x;
	printf("%d\n",(a = 3 * 5,a * 4));
	printf("%d\n",((a = 3 * 5,a + 4),a + 5));
	x = b = (a = 3,6 * 3);
	printf("x = %d\tb = %d\n",a,b);
	x = b = a = 3,6 * a;
	printf("x = %d\tb = %d\n",a,b);
	return 0;
}
#endif
